You should have a custom launcher installed like apex or nova to use this theme / icon pack , you can also apply this theme / icon pack from the respective launcher’s theme / icon settings.

FAQ section inside the app which answers a lot of questions you may have.Please read it before you emailing your question.

IN-APP PURCHASE

Only for donations.

ICONS REQUEST

Actually its on preview stage of development , no icons request actually , will be integrated as soon as official icons is completely released and crafted more icons. Anyway all icons will get the shape too meet the design.